『基本セット第4版』のカード

《終末の時計》

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Artifact

During your upkeep, put one doom counter on Armageddon Clock. At the end of your upkeep, Armageddon Clock deals X damage to each player, where X is the number of doom counters on Armageddon Clock. During any upkeep, any player may pay to remove a doom counter from Armageddon Clock.

[3E]:R [4E]:R [AQ]:U [ME4]:R